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What happens when (i) Concentrated H2 ...

What happens when
(i) Concentrated `H_2 SO_4` is added to calcium fluoride.
(ii) `SO_3` is passed through water ?

Text Solution

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(i) `underset ("Calcium fluoride") (CaF_2) + underset ("Sulphuric acid") (H_2 SO_4) rarr underset ("Calcium sulphate") (CaSO_4) + underset ("Hydorgen fluoride")(2HF)`
(ii) `underset ("Sulphur trioxide")(SO_3) + underset ("Water") (H_2O) rarr underset ("Sulphuric acid")(H_2 SO_4)`
`SO_3` dissolves on water to form `H_2SO_4`.
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